Firstly, simplicity is key. The beauty of an ebook file is that the same file can be read on hundreds of different devices from desktop computers to tablets and mobile phones. Device manufacturer and operating system make no difference, the file can be read on all. Although the file can be read, it won’t always display as intended, particularly if the formatting is complex and you are using an older device. Though newer e-reader devices or apps can deal with complex formatting, such as multiple column layouts and tables, there are hundreds of thousands of older devices still in use. You need to ensure that your book reads as intended on all devices so avoid complex layouts such as multiple columns on each page, text wrapping images, text boxes and drop-caps.
This next point may sound ridiculous to some people but you will be surprised how often we come across it. Do not use the space-bar or the tab key to centre text. Multiple space-bar keystrokes and tabs are ignored by e-reader devices so you will find your text back on the left. Instead just use the ‘centre text’ button on Word’s Home tab.
There are at least three common ways to create indents in a Word document, however only one is understood by e-reader devices. Do not use multiple space-bar keystrokes to create indents, for the reasons mentioned above. Likewise, the use of the tab key is also ignored by e-reader devices. The correct way to create indentions is to set the indentation using paragraph styles. Just expand the paragraph options on Word’s Home tab and select the indent type and size you require. We recommend indents of less than 1cm as e-reader screens can be quite small and a 1cm indent can look excessive. Around 0.5 is perfect.
You can use multiple paragraph returns to space out paragraphs but ensure that you use a page-break at the end of each chapter. This ensures that your next chapter will start at the top of a new page. Do not use soft paragraph returns i.e holding shift then hitting the paragraph return key as again these will be lost during conversion.
You should not add headers or page numbers. Every e-reader device will automatically create headers based on the book title and/or author name. Page numbers are generated by the e-reader device itself. Note also that your book will vary in number of pages depending on the screen size of the device and the user’s font size settings. It is therefore unwise to refer to specific page numbers within the body text of your manuscript.
Following on from my previous point regarding pages, footnotes do not work in ebooks, as you cannot be sure where the page break will fall. Instead you can use endnotes, either at the end of each chapter, or at the end of the book.
There is no problem including images in an ebook, however there is a significant issue that needs to be considered when selling through Amazon, namely delivery fees. Unlike other ebook sellers Amazon charges you, the author/publisher, a delivery fee every time your book is purchased and downloaded. This fee is based on file size. The more images you use, the larger the file will be and the higher the delivery charge. The issue is further complicated by Amazon’s royalty structure where if you select the 30% royalty option, they waive the fee. You can factor the delivery fee into your ebook’s list price but if it is a large file and you wish to sell it cheaply this may not be the best solution. You will need to weigh up which royalty option works out best for you, based on the price you wish to charge for your ebook and its file size. It sounds a little complicated but more info can be found here: https://kdp.amazon.com/en_US/help/topic/G200634560
Here is a short list of body text settings that result in good ebook conversions:
Use a standard font such as Times New Roman, Georgia or Arial.
Use a point size of 10, 11 or 12 for the main body text.
Use black text.
Avoid line spacing greater than 1.5.
Use standard margins.
Do not use leading or kerning as these will be ignored
If you wish to highlight particular words or sentences, use only basic formatting tools such as bold, italic and caps.